Stadium: Center Round: 27 Ground: Hardcourt outdoor
| Challenger Canberra 2 | 2018/10/26 23:50 | Colin Sinclair v Harry Bourchier | 2-6,4-6 |
| Challenger Traralgon | 2018/10/21 23:00 | Yosuke Watanuki v Colin Sinclair | 6-3,7-5 |
| Challenger Traralgon | 2018/10/21 05:00 | Moerani Bouzige v Colin Sinclair | 4-6,1-6 |
| Challenger Traralgon | 2018/10/21 01:50 | Calum Puttergill v Colin Sinclair | 4-6,1-6 |
| ITF Australia F8 | 2018/10/14 03:45 | Maverick Banes v Colin Sinclair | 6-4,6-2 |
| ITF Australia F8 | 2018/10/14 00:00 | Hiroyasu Ehara v Colin Sinclair | 6-2,1-6,3-6 |
| ITF Australia F8 | 2018/10/12 01:15 | Colin Sinclair v Kuan-Yi Lee | 6-1,6-2 |
| ITF Australia F8 | 2018/10/11 04:10 | Colin Sinclair v Gage Brymer | 7-6,6-3 |
| Challenger Shenzhen 2 | 2018/11/02 04:10 | Ze Zhang v Aleksandr Nedovyesov | 6-7,6-7 |
| Challenger Shenzhen 2 | 2018/11/01 04:20 | Ze Zhang v Liam Broady | 6-4,1-6,6-1 |
| Challenger Shenzhen 2 | 2018/10/30 05:05 | Radu Albot v Ze Zhang | 4-6,6-4,2-6 |
| Challenger Liuzhou | 2018/10/24 04:25 | Thomas Fabbiano v Ze Zhang | 6-4,6-1 |
| Challenger Liuzhou | 2018/10/23 05:05 | Ze Zhang v Fajing Sun | 6-4,6-3 |
| Challenger Ningbo | 2018/10/16 09:15 | Ze Zhang v Rigele Te | 1-6,2-6 |
| ATP Shanghai | 2018/10/09 06:30 | Daniil Medvedev v Ze Zhang | 3-6,7-6,6-4 |
| Challenger Shanghai | 2018/09/11 03:00 | Alexander Bublik v Ze Zhang | 6-3,5-7,6-4 |